Join Date: Aug 2009
Thanked 0 Times in 0 Posts
Rep Power: 5
Does the Starting battery also need to be wired behind the Victron BMV-602S shunt?
Hello! Here's another wiring question for you experts...
I'm redoing the wiring on my new-to-me 35 year old boat. Part of that is the battery banks, and part of that is installing a battery monitor. I've settled on the Victron BMV-602S, as it is nicely priced, is apparently easy to install, and does the job it needs to do with a minimum of fuss.
So. It's clear that there can be no loads behind the shunt on the negative battery terminal of the house battery. (By behind I mean, of course, refers to the battery side, not the 'rest-of-the-boat' side).
However, don't I want to connect the negative post on the start bank to the negative post on the house bank? And if so, do I make that connection on the boat side of the shunt or on the house bank side?
In a related question, where does the 'ship ground' go? I assume the 'ship ground' is going to be the engine in most cases, right?
My concern would be that if I connect the ship ground behind the shunt, and then some other piece of electrical equipment also is grounded to the ship ground, then that load would not be monitored by the Battery Monitor, right?
So, to recap, two questions:
1) _If_ I'm supposed to connect the negative side of both banks together, do I connect them ahead of the shunt or behind it?
2) _If_ I'm supposed to connect one or both battery banks to the ship ground (engine?), do I connect them ahead of the shunt or behind it?
Thanks for all the help!
... or I'm wrong.
Living aboard, currently in the Chesapeake
O'Day 37, still new to us